Shield structure for electronic device

Abstract

The present invention provides a shield structure for an electronic device allowing conductive members to be connected electrically to each other at low impedance while preventing the leakage of electromagnetic waves effectively. The first conductive member and the second conductive member for enclosing the electronic device respectively have laid portions that are laid one on the other and fastened to each other at plural positions by means of screw members. Through-holes into which the screw members are to be inserted are formed on both of the laid portions. Protruding portions, which protrude toward the laid portion of the second conductive member, each are formed between the adjacent through-holes on the laid portion of the first conductive member. The protruding portions each have a shape extending in the direction connecting the adjacent through-holes and bulging from both ends toward the center thereof in a smooth curve.

1. A shield structure for an electronic device, comprising a first conductive member and a second conductive member that enclose the electronic device,
 wherein the first conductive member and the second conductive member respectively have laid portions that are laid one on the other and fastened to each other at plural positions by means of screw members, 
 through-holes into which the screw members are to be inserted are formed on the laid portion of the first conductive member and the laid portion of the second conductive member, respectively, and protruding portions each are formed between the through-holes adjacent to each other on the laid portion of the first conductive member, the protruding portions each protruding toward the laid portion of the second conductive member, and having a shape extending in a direction connecting the adjacent through-holes and bulging from both ends toward the center thereof in a smooth curve, and 
 the laid portion of the second conductive member is bent along the surfaces of the protruding portions by being pressed by the screw members. 
 
     
     
       2. The shield structure for an electronic device according to  claim 1 ,
 wherein the surfaces of the protruding portions each are curved smoothly in a longitudinal direction thereof across a predetermined width. 
 
     
     
       3. The shield structure for an electronic device according to  claim 1 ,
 wherein the laid portion of the second conductive member has a thickness smaller than that of the laid portion of the first conductive member. 
 
     
     
       4. The shield structure for an electronic device according to  claim 1 ,
 wherein a center-to-center distance between each of the protruding portions and the through-hole closest to the protruding portion is 150 mm or less. 
 
     
     
       5. The shield structure for an electronic device according to  claim 4 ,
 wherein the protruding portions each are formed in an area where a center-to-center distance between the adjacent through-holes is 150 mm or more. 
 
     
     
       6. The shield structure for an electronic device according to  claim 4 ,
 wherein the protruding portions each have a length one tenth or more of a center-to-center distance between the adjacent through-holes. 
 
     
     
       7. The shield structure for an electronic device according to  claim 1 ,
 wherein the protruding portions each have a central protrusion height of 1.0 mm or less. 
 
     
     
       8. The shield structure for an electronic device according to  claim 1 ,
 wherein the protruding portions each have a dome-like shape formed by a drawing process. 
 
     
     
       9. The shield structure for an electronic device according to  claim 1 ,
 wherein the electronic device is a plasma display panel. 
 
     
     
       10. The shield structure for an electronic device according to  claim 9 ,
 wherein the first conductive member includes: a film disposed at a front side of the plasma display panel and having a conductive layer; and a frame-shaped metal member connected electrically to a peripheral portion of the film, and 
 the second conductive member is a back cover disposed at a rear side of the plasma display panel.